1444121407 has 2 divisors, whose sum is σ = 1444121408. Its totient is φ = 1444121406.

The previous prime is 1444121377. The next prime is 1444121443. The reversal of 1444121407 is 7041214441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1444121407 - 2⁷ = 1444121279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444121477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722060703 + 722060704.

It is an arithmetic number, because the mean of its divisors is an integer number (722060704).

Almost surely, 2^1444121407 is an apocalyptic number.

1444121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444121407 is an equidigital number, since it uses as much as digits as its factorization.

1444121407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1444121407 is about 38001.5974269504. The cubic root of 1444121407 is about 1130.3195397262.

Adding to 1444121407 its reverse (7041214441), we get a palindrome (8485335848).

The spelling of 1444121407 in words is "one billion, four hundred forty-four million, one hundred twenty-one thousand, four hundred seven".